Hoisting and conveying device.



No. 879,113. PATE-NTED FEB. 11

T, S. MILLER & J. H..DIGKINSON. HOISTING AND CONVEYING DEVICE.

APPLICATION FILED NOV. 28, 1906.

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PATENTED PEB.11, 1908. T. S. MILLER & J. H. DICKINSON.

H OISTING AND CONVEYING DEVICE.

APPLICATION FILED NOV. 28, 1906.

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UNITED STATES PATENT oEEro THOMAS SPENCER MILLER, OF SOUTH ORANGE, AND JOSEPH H. DICKINSON, OF MONTOIIAIR,

. NEW JERSEY.

HOISTING AND CONVEYING DEVICE.

Patented Feb. 11, 1908.

Original application filed-June l2I 1902. Serial No. 111.331. Divided and this application filed November 28. 1906. Serial No. 345.533.

1 0 all whom it may concern:

Be it known that we, THOMAS SPENCER MILLER and JOSEPH I-I. DicxiNsoN, both citizens of the United States, and residents of South Orange, county of Essex, and State of New Jersey, and Montclair, county of Essex, and State of New Jersey, respectively, have invented a new and Improved Hoisting and Conveying Device, of which the follow ing is a specification.

The present invention relates to improvements in hoisting and conveying devices and this application is a division of our application for hoisting and conveying devices, filed June 12th, 1902, SerialNumber 111,331. In the accompanying drawings the invention is Thown embodied in a cableway for collecting ogs.

The invention consists of the construction, combination and arrangement of parts set forth in and falling within scope of the appended claims.

In the annexed drawings Figure 1 shows in elevation a cableway embodying ourv invention. Fig. 2 is a plan view of the operating parts of the carriage such as is shown. in Fig. 1. Fig. 3 is a detail partly in section,

showing the construction suitable for the frlctlon hoistlng drum and the frlction slack pulling drum.

I As has been stated in our application No.

' 111,331 above referred to, difficulty has been experienced in the operation. of hoisting and conveying devices With cable carriage and load carriage, such (lifiiculty to some extent consisting in causing the fall, when unload ed, to promptly take up or fall rope. the application provided a slack puller or means for paying out the hoist rope so that a prompt and rapid. paying out of this rope may be secured.

Referring to the drawings in detail S and S represent, respectively, head and tail supports for a cableway, A the trackway cable, II the hoist or fall rope, and T the traction or carriage hauling rope. The head and tail supports are provided with suitable guides for the various ropes. Three friction rope drums D, D D, are shown driven by a suitable engine; D having the traction rope connected therewith; D and D having the rope or ropes connected therewith by which the raising or lowering of the load and the the slack in the lowering In the present invention, as in f above mentioned, we have fall rope is secured. Each of these friction drums may be, if desired, of the construction shown in Fig. .3, wherein the driven spurwheel 1 fast upon the shaft 2 carries a V- shaped friction ring 3 entering acorresponding recess in the flange 4 of the rope drum 5 which is loose upon the shaft 2 and is pressed toward the spur-wheel 1 in opposition to the coil-spring 6 by the cross-key 7. A band brake 8 is applied to the exterior of the flange 4. When neither the band brake nor the friction ring engages the rope drum it pays out its rope freely. When the band brake is disengaged but the friction ring is engaged, it hauls in its rope. When the friction ring is disengaged and the band brake is engaged, it holds its rope stationary. When the'brake is lightly engaged, the paying out of the rope is under tension. When the friction ring is so lightly engaged as to slip upon the flange 4 it acts as a yielding take-up rope to instantly take in any slack that may occur in. the rope which it controls.

By utilizing these capabilities of the three friction rope-drums D, D, and D the opera torv at the engine is enabled to operate and control the three ropes B, O, and T in the manner hereinafter described without permitting any substantially undesirable slack in any of said ropes.

Upon the trackway cable is a trolley F from which. is suspended a load carriage E containing the drum I, which receives the hoist or fall rope II, and the drum or drums which receive the hoist operating rope or ropes. Preferably the connection between the load carriage E and trolley F is by links or other device which has a certain measure of flexibility sufficient to permit relative turning and bending between the two parts.

The carriage construction shown in the drawings, and especially in Fig. 2 comprises a suitable frame having journaled therein a drum I for the fall or hoist ro e and a drum G which receives the loo of a single rope composed of the two runs O, which communicates its motion to the drum by its frictional grip thereon. The fall rope drum I is a storage drum of sufficient ca acity to accommodate the maximum length of fall rope which will be needed. The drum G prefer-ably contains an elliptical groove with sufficient wraps 0f the rope therein to give the rope a sufficient grip on the wheel;

though other stituted.

It is evident that by operating the hoist operating rope B, C, the fall rope may be raised or lowered at will and the speed of lowering is independent of the weight of that part of the rope then paid out, or the attachments thereto. It will therefore be possible to lower it at a greater rate of speed than where its weight alone is relied upon. The use of fall rope carriers may also be obviated with all the difliculties attendant thereto.

In moving the carriage along the trackway the hoist operating rope or ropes must be wound in or aid out to correspond with the movement oi the carriage if there is to be any hoisting or lowering of the load. The two drums D and D are therefore required to operate this rope. The frame E is supplied with different points of attachment for the suspending links f, by means of small holes 6, so that the suspension point may be shifted as necessary to make the ropes pull right.

In the construction of this device we employ two distinct friction-rope drums D, D

or operating the slack pulling and hoisting ropes, respectively, so that of said drums in unison the drum mechanism on the load carriage may be held stationary as the carriage moves toward the head support and vice-vers'a, by paying out on the drums D, D in unison, the drum mechanism on the load carriage may be held stationary as the load-carriage travels toward the tailsupport. But when it is desired to operate the drum mechanism on the load carriage in either direction, it may be done by hauling in on one of the drums D or D while the slipgripping means may be subby inhauling both ping of the friction'of the other drum permits it to pay out under suflicient tension to maintain any re uired tautness of said hoisting and slack-piilling ropes.

Although the carriage upon which the traveling drums are mounted is shown as traveling upon an elevated cable or track- Way, we do not limit ourselves thereto since certain of the principles of our invention might be embodied in apparatus with the traveling drums mounted upon other forms i of conveyance.

What we claim is: a i 1. In a hoist conveyer, a track, a trolley on I said track, a wheel carried by said trolley, hoisting mechanism actuated by said wheel, a-cable passing over said wheel, independent winding drums receiving the ends of said cable, and a separate back-haul cable connected to said trolley, substantially as described. 2. In a hoist conveyer, a track, a trolley on said track, a wheel carried by said trolley, hoisting mechanism geared -with said wheel, a cable passing over said wheel, independent winding drums receiving the ends of said cable, and a separate back-haul cable connected to said trolley, substantially as described. 3. In a hoisting and conveying device the combination with a trackway, a carriage thereon, means for traversing the carriage, a

rope upon said drum, of a hoist-operating drum upon the carriage, gear driving connections between the two drums, two distant stationary drums, and a rope extending from one of the distant drums to and about the hoist-operating drum and then back in the tant drum, and means for turning said distant drums at the same or different rates of speed.

4. In a conveying apparatus, in combination, a trackway, a load carriage, a traction rope, a drum for operating the same, a hoist on the load carriage, a rope-drum-engine containing a hoisting-drum and a separate l slack-pulling-drum, and a rope extending I from one of said drums to and wrapped I around a member of said hoist and back again to the other of said drums.

In testimony whereof we have signed our I names to this specification in the presence of two subscribing witnesses.

THOMAS SPENCER MILLER. JOSEPH H. DICKINSON. I Witnesses:

1' H. G. BARRINGTON,

R. B. CAVANAGH.

fall rope drum upon said carriage, and a fall direction from which it came to the other dis- 

